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Proceedings Paper

Measurement of trace ethane using mid-IR LED of 3μm
Author(s): Yang Cai; Yulin Li; Bing Tong; Min Li
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Paper Abstract

This paper presents our latest work on trace ethane gas measurement using a mid-infrared light emitting diode (MIR-LED) and a PbSe photodetector. Our measurement takes advantage of both a relative high emission spectrum of MIR-LED at 3μm region where ethane has the strongest baseline absorption, and current driving that a lock-in algorithm is be able to involved to improve the signal to noise ratio of the system. The average deviation between the standard and the measurement of ethane concentration is 1.8%. As the center wavelength drift of the MIR-LED (LED34tec) is of concern within the temperature rang of 15~35°C, we propose two schemes to reach a higher sensitivity of the system.

Paper Details

Date Published:
Proc. SPIE of200, OFS2013 23rd International Conference on Optical Fiber Sensors 2, ; doi: 10.1117/12.2059572
Show Author Affiliations
Yang Cai, Wuhan Univ. of Technology (China)
Yulin Li, Wuhan Precision Photonics Lab., Inc. (China)
Bing Tong, Wuhan Univ. of Technology (China)
Min Li, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. of200:
OFS2013 23rd International Conference on Optical Fiber Sensors 2
Jesus M. Mirapeix Serrano; Manuel López-Amo; José M. López-Higuera; José M. López-Higuera; Julian D. C. Jones, Editor(s)

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